Oyster opener



FIG. 1 is a bottom plan view of an oyster opener showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a side elevational view thereof; and,

FIG. 6 is a perspective view thereof.

The broken lines showing indicia are for are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an oyster opener, as shown and described. 